Previous and recent advances in pyranoanthocyanins equilibria in aqueous solution

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Joana Oliveira (Autor) FCUP; Nuno Mateus (Autor) FCUP; Victor de Freitas (Autor) FCUP

Revista

Título: Dyes and Pigments

Vol. 100

Páginas: 190-200

ISSN: 0143-7208

Editora: Elsevier

Indexação

ISI Web of Knowledge - 64 Citações

Scopus - 0 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-017-SF1

DOI: 10.1016/j.dyepig.2013.09.009

Abstract (EN): Pyranoanthocyanins are anthocyanin-derived compounds found in nature that present a vast palette of colours ranging from yellow to turquoise blue. Studies in aqueous solutions of these pigments by UV-Visible spectroscopy revealed their higher colour stability when compared to their anthocyanin precursors. Through Nuclear Magnetic Resonance (NMR) techniques it was possible to confirm the absence of hydration reactions in pyranoanthocyanins, contrarily to anthocyanins, which helps explaining their higher colour stability with the increase of the pH.

Idioma: Inglês

Tipo (Avaliação Docente): Científica